New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1887-06-19
SUNDAY EDITION.
JUNE 10, 1887.
CASTINGS OF FINE STEEL.
GOOD WORK FOR THE NAVAL VESSELS.
METAL OF REMARKABLE rLExIBnIrY-sArIsrAo.


TORY DOCK TRIAL OF THE CHICAGO.
WASHINGTON. June 10 tspeciaf-Conmander r. d.
Evans the chief inspector OF steel for the naval
vessels returned this morning from Chester and Thur
low whore he inspected the steel castings for the vessels
building He says that the steel stern post OF gum
boat No cast day before yesterday the Standard
Steel Works at Thurlow and inspected yesterday.
The engine bed plate for the cruiser Baltimore which
there, also inspected Both vessels al
Cramps yards. The inspection was highly gratifying.
The post weighing $1,000 pounds. cast with
out defect and considered the best large steel
ing made in this country. The first ship
ment OF ship plates and boiler materials for the
dynamite cruiser was made yesterday from Thur
low Commander Evans brought to the Navy Depart
ment this morning specimen OF steel plate and one
half inches in thickness which lad been bent cold upon
itself under powerful trip hammer without the sign Oh
a break. The manufacturers were doubtful OF being
able cast the first trial. plate OF that thickness
which would stand severe strain. Commander Evans
supervised the test himself and when the steel failed to
give way at the required strain he tried to break with
out success The experiment is regarded remark
able. The sample used part OF the plato
intended for the shoeplate OF the Baltimore which is
attached keel The bent piece Of steel was pre-
tract for sTppyng the steel for the and aror
the vessels to day returned TO the Navy De-
Rem stee CompsnV II Will receive the signature Of the
Secretary Of the Navy and become operative In few
days. A.
The dock trials Of the machinery OF the cruiser
"Chicago" which have just been finished havo
resulted satisfactorily. With the vessel fast
at her dock each OF engines developed 1000
horse power with SO revolutions per minute OF the
crews This 10 equivalent to about 1000 combined
horse power with the number of revolutions when
the running free The contract requirement. 10
5000 power but the steam pressure during the
trial considerably below the maximum II Deevea
that the necessary increase be obtained The ma
chnery worked smoothly with the exception OF sngnt
humping in one OF the engines which has since been
cured and the vessel will be ready to start from Chester
for New-York next as-lday. Engineer J. w. Thomson
has been permanently attached to the Chicago.
The see-makers continue to grumbe over the sever
y of the imposed by the Navy Department on de-
yeries of steel for the new vessels These tests
relaxed time ago. with the result that about 100
tons of metal which had already been rejected was ac
cepted Immediately applied TO the construction OF
the cruiser Baltimore" For engine and boiler making
however present requirement is that the metal sha
have tensile strength of 10000 pounds per square
inch elastic limit of $4,000 pounds and 20 per cens
opgaton A concession has been made to the manu-
facrers In tho reduction OF the original requrementin
the matter OF eongation from 26 70 20 per cent